The nuclear envelope is a membrane system which surrounds the nucleoplasm of eukaryotic cells. It is composed of the nuclear lamina, nuclear pore complexes and two nuclear membranes. The space between the two membranes is called the nuclear intermembrane space.
The membrane surrounding the nucleus. This term is used when it is not known if the protein is found in or associated with the inner or outer nuclear membrane.
The nuclear pore complex (NPC) constitutes the exclusive means of nucleocytoplasmic transport. NPCs allow the passive diffusion of ions and small molecules and the active bidirectional transport of macromolecules such as proteins, RNAs etc across the double-membrane nuclear envelope.The NPC is composed of at least 30 distinct subunits known as Nucleoporins (NUPs).
Involved in kinetochore assembly and chromosome segregation during embryonic mitosis. Required for the localization of the NDC80 complex member him-10, the chromosomal passenger complex component air- 2 and nuclear pore complex proteins npp-23 and npp-15 to kinetochores during metaphase. Required for npp-23 localization to the nuclear envelope during interphase. Recruits mdf-1, a component of the spindle assembly checkpoint, to the nuclear envelope. Appears dispensable for the assembly of the nuclear pore complex and for nuclear protein import. {Experimental EvidencePubMed:22238360}.
National and Kapodistrian University of Athens
Department of Biology
Biophysics & Bioinformatics Laboratory